Clonezilla / Support Requests / #82 USB 3.0: transfer rate gradually drops down to zero

Steven Shiau - 2016-09-18

assigned_to: Steven Shiau
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Steven Shiau - 2016-09-18

Did you try the latest testing Clonezilla live? Like 2.4.8-5?
http://clonezilla.org/downloads.php
It comes with Linux kernel 4.7 so the resutls might be different.

Steven

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- Matthew MacGregor - 2016-09-18
  
  Hi Steven,
  
  I would like to reinforce the OP's suspicion that there may be some problem with Clonezilla and USB 3.0. I have also seen strange behavior that I have isolated to USB 3.0 only.
  
  I have an external HD dock that supports usb 3.0. When I plug it into a usb 3 port on my laptop, Clonezilla finds the drive but does not give it as an option when selecting the destination disk. When I plug it into the USB 2.0 port on my laptop, everything is fine (drive is detected and is an option for destination).
  
  The case reported above is a different symptom, but I was interested to see that using a USB 2.0 extension cable solved the OP's issue. I will test this as well.
  
  While the symptom is different, the solution seems the same: use USB 2.0. This seems to reinforce that there may, indeed, be some kind of issue with usb 3.0 and Clonezilla.
  
  I am using 20160627-xenial-amd64. Also noticed this in 20150608-vivid-amd64. Is there a testing version with a newer kernel for the alternative (ubuntu) version? If so I will test and report my findings as well...
  
  Thanks,
  Matthew
  
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- David S - 2016-10-02
  
  Hi Steven,
  
  I tried the architecture:
  
  clonezilla-live-2.4.8-10-amd64.iso
  _
  
  with "eGo BlackBelt Portable" hard drive connected to Dell Latitude E5570 through USB 3.0 port. The result is the same: the transfer speed steadily drops down. After 8 min, it dropped down to 170MB/min. After another 15 min, it dropped down to 53MB/min.
  
  Next step
  
  It seams that Clonezilla Live CD is not compatible with USB 3.0. Will you address the problem?
  
  Last edit: David S 2016-10-02
  
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  - Steven Shiau - 2016-10-13
    
    So did you try the latest testing Clonezilla live 2.4.9-7 or 20161010-yakkety? They come with newer Linux kernel so have better hardware support.
    
    Steven
    
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    - David S - 2016-10-14
      
      Hi Steven,
      
      Thanks for looking into this problem. The original response (dated Sep 18) says:
      
      Did you try the latest testing Clonezilla live? Like 2.4.8-5?
      http://clonezilla.org/downloads.php
      It comes with Linux kernel 4.7 so the resutls might be different.
      
      My reply (dated Oct 02) says:
      
      I tried the architecture:
      * clonezilla-live-2.4.8-10-amd64.iso
      . . . The result is the same
      
      I downloaded this image from the testing repository. After getting the shell prompt, I typed
      
      $ uname -r 4.7.0-1-amd64 $ uname -v #1 SMP Debian 4.7.5-1 (2016-09-26)
      
      to reveal the kernel revision.
      
      The recent post asks:
      
      did you try the latest testing Clonezilla live 2.4.9-7 or 20161010-yakkety? They come with newer Linux kernel so have better hardware support.
      
      My guess (based on the Debian kernel) is that Clonezilla live 2.4.9-7 runs on the same kernel revision, i.e. 4.7.0-1-amd64, doesn't it? What is the point of continuing trying newest releases of Clonezilla from the testing branch, if the XHCI driver in the kernel remains the same?
      
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      - Steven Shiau - 2016-10-14
        
        Not really. Although "uname -r" shows the version number 4.7.0-1-amd64, actually this is only the version named by Debian. If you run:
        dpkg -l | grep -i linux-image
        You will find it's newer as "4.7.6-1" compared with the previous "4.7.2-1+s1" in Clonezilla live 2.4.8-5.
        Besides, the Clonezilla live 20161010-yakkety actually uses Linux kernel 4.8.
        Both of them are definitely newer than the one you tried. So please give it a try.
        
        Steven
        
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Steven Shiau - 2016-10-02

@Matthew,
Could you please try testing Clonezilla live, e.g. 2.4.8-10 or 20160928-yakkety?
http://clonezilla.org/downloads.php
They come with Linux kernel 4.7 and 4.8 respectively, so the results might be different.

Steven

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- Matthew MacGregor - 2016-10-02
  
  Hi, Steven
  
  I tested 'clonezilla-live-20160928-yakkety-amd64.iso' and it detects the drive correctly.
  
  Thanks,
  Matthew
  
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Steven Shiau - 2016-10-02

Great! Thanks for testing that.

Steven

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Kadeos - 2019-06-21

Dear @steven_shiau,

is there any progress here?
Have you found the reason for the usb speed drops?

Kind Regards,
Kadeos

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Steven Shiau - 2019-06-28

Well, it's been two years. The Linux kernel has changed a lot. What's the issue you have there?
BTW, please test the latest Clonezilla live first, e.g., 2.6.1-25:
https://clonezilla.org/downloads.php

Steven

Steven

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USB 3.0: transfer rate gradually drops down to zero

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